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Elements, Etc 2
Test Description: Test review
Instructions: Answer all questions to get your test result.
1) Elements in the same group (column)
A
have the same atomic mass
B
are metals
C
are noble gases
D
react in similar ways
2) Water is not found on the periodic table because water is
A
a compound
B
an atom
C
a liquid
D
a mixture
3) Which substance is a compound?
A
CO
B
Fe
C
He
D
Si
4) Which substances are elements?
A
H2CO3 and HCl
B
O and He
C
H2O and O
D
CO2 and H2O
5) All matter is made up of
A
cells
B
atoms
C
molecules
D
compounds
6) Which is only a physical change?
A
the rusting of iron
B
the souring of milk
C
the burning of oil
D
the melting of ice
7) All the atoms that make up an element are
A
different but have the same mass as the atoms of other elements
B
always moving at the same speed
C
alike but different from those of other elements
D
always spaced the same distance aprart on the periodic table
8) How many atoms of hydrogen are in two water molcules (remember water is H20)
A
3
B
4
C
1
D
2
9) What is a sign of a chemical reaction occuring?
A
bubbling and fizzing
B
nothing
C
smaller
D
color change
10) What speeds up a chemical reaction?
A
Increase the temperature
B
Decrease the temperature
C
sugar
D
yelling at it
*select an answer for all questions
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